. Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products. omposition ofindividual stalks varies from butt to top. \Vhen circumstances arise such 550 CHAPTER XXVII that it is desirable to make an analysis of cane, a large number of stalksmust be taken and the finally completed sub-sample must be representativeof the length of the canes. Division of the stalks into quarters by splitting longitudinally is easilydone with a sharp heavy knife. If cane is defined as the material delivered to the mill the accompanyingtrash
. Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products. omposition ofindividual stalks varies from butt to top. \Vhen circumstances arise such 550 CHAPTER XXVII that it is desirable to make an analysis of cane, a large number of stalksmust be taken and the finally completed sub-sample must be representativeof the length of the canes. Division of the stalks into quarters by splitting longitudinally is easilydone with a sharp heavy knife. If cane is defined as the material delivered to the mill the accompanyingtrash and dry leaves are therein included. In sampling, the proportionof trash to clean cane should be determined and its analysis madeseparately. In general, when the composition of the cane from a certain field is re-quired it is better to isolate a car load on the carrier and to take samplesof the juice and bagasse rather than to attempt to obtain a sample from sounsatisfactory a material. Preservation of Samples.—The preservation of samples composited overperiods as long as twenty-four hours adds materially to the capacity of the. Fig. 355 chemist, and provided the compositing is intelligently done does not detractfrom the value of the control. Indeed a careful analysis of a twelve-hoursample is of more value than twelve hourly analyses necessarily performedin haste. The two antiseptics employed to prevent fermentation are mercuricchloride and formaldehyde. Of the former 25 mgrms. and of the latterI of a 40 per cent, solution per 100 of sample is used. The above quantity of mercuric chloride causes an increase of o • 05 ° Brix,which correction is applied to the readings of the instrument. In taking samples of juices it is advisable to duplicate the sample, usingone for the determination of solids and one for sugar. The writer usesformaldehyde as the preservative of the first, diluted to nearly that specificgravity which experience has shown the juice will be. Corre
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsugar, bookyear1921
